This is the same area as is used for the custom status dialog's scrolled
window. The content area turns out very slightly smaller, because the
area includes the tree view's header.
<property name="hscrollbar_policy">never</property>
<property name="vscrollbar_policy">automatic</property>
<property name="shadow_type">etched-in</property>
+ <property name="width_request">408</property>
+ <property name="height_request">252</property>
<child>
<object class="GtkTreeView" id="blocked-contacts-view">
<property name="visible">True</property>